LED automobile lamp

Abstract

An LED automobile lamp includes a lens, a heat dissipation shell, a light source pillar, and a rear cover. The heat dissipation shell is mounted with a light-reflecting surface, the light source pillar is mounted at the bottom of the heat dissipation shell, the lens is arranged at the top of the heat dissipation shell, and the rear cover is arranged at the bottom of the light source pillar. A first light source plate and a second light source plate are symmetrically arranged on two sides of the light source pillar. Both the first light source plate and the second light source plate extend into a light-reflecting region surrounded by the light-reflecting surface and the lens. The top of the light source pillar is provided with a light-shielding sheet, and a bottom of the light source pillar is provided with a stepped plane coupling with the heat dissipation shell.

What is claimed is: 
     
       1. An LED automobile lamp, comprising:
 a lens, a heat dissipation shell, a light source pillar, and a rear cover; 
 wherein 
 the heat dissipation shell is internally mounted with a light-reflecting surface, the light source pillar is arranged at a bottom of the heat dissipation shell, the lens is arranged at a top of the heat dissipation shell, the rear cover is arranged at a bottom of the light source pillar, a first light source plate and a second light source plate are symmetrically arranged on two sides of the light source pillar, both the first light source plate and the second light source plate extend into a light-reflecting region, the light-reflecting region is surrounded by the light-reflecting surface and the lens, a top of the light source pillar is provided with a light-shielding sheet, and the bottom of the light source pillar is provided with a stepped plane, the stepped plane is coupled with the heat dissipation shell, wherein the light source pillar is fastened to the heat dissipation shell by a plurality of screws, and the light source pillar further comprises a fixed pillar body and a stepped limit dais, wherein two sides of the fixed pillar body are symmetrically provided with flat mounting surfaces for fixing the first light source plate and the second light source plate, a plurality of second mounting holes are uniformly arranged on the flat mounting surfaces, the light-shielding sheet is arranged on a top of the fixed pillar body, the stepped limit dais is arranged on a bottom of the fixed pillar body, and the stepped plane is arranged on an end face and the stepped limit dais is connected to the fixed pillar body on the end face. 
 
     
     
       2. The LED automobile lamp according to  claim 1 , wherein the bottom of the heat dissipation shell is provided with a cylindrical boss, the cylindrical boss is internally provided with a stepped circular hole fitting with the light source pillar, a plurality of guide positioning grooves with different sizes are arranged at intervals in a circumferential direction of the stepped limit dais, and the stepped circular hole of the cylindrical boss is internally provided with a plurality of guided anti-deviation ribs, and the plurality of guided anti-deviation ribs protrude inwardly and are fitted within the plurality of guide positioning grooves. 
     
     
       3. The LED automobile lamp according to  claim 1 , wherein the light-reflecting surface is an integrated structure or a combined structure. 
     
     
       4. The LED automobile lamp according to  claim 1 , wherein the light-reflecting surface is composed of two semi-light-reflecting surfaces and a transition surface, the transition surface is connected between the two semi-light-reflecting surfaces, the two semi-light-reflecting surfaces are respectively arranged in correspondence with the first light source plate and the second light source plate, and a focus of each of the two semi-light-reflecting surfaces is located on a surface of the corresponding light source plate, and the transition surface does not participate in a light distribution. 
     
     
       5. The LED automobile lamp according to  claim 1 , wherein an outer surface of the heat dissipation shell is provided with a heat dissipation fin, the heat dissipation fin is distributed in a direction perpendicular to a mounting direction of the automobile lamp, and the heat dissipation shell is made of aluminum alloy material. 
     
     
       6. The LED automobile lamp according to  claim 1 , wherein the light-reflecting surface is arranged on a concave surface of a light-reflecting component, a support hem is extended on an outer periphery of the light-reflecting component, a plurality of fixed mounting studs are arranged at intervals in the heat dissipation shell, and the support hem is provided with a plurality of first mounting holes corresponding to the plurality of fixed mounting studs. 
     
     
       7. The LED automobile lamp according to  claim 1 , wherein the rear cover is fastened to a cylindrical boss by the plurality of screws, the cylindrical boss is at the bottom of the heat dissipation shell, the rear cover is provided with an integrally-injected power copper pin, the rear cover is internally provided with a round hole for potting, and the rear cover is further provided with a nylon rivet for a hole sealing. 
     
     
       8. The LED automobile lamp according to  claim 1 , wherein when the light-reflecting surface distributes light, the lens is a flat transparent lens, and when the light-reflecting surface distributes light in combination with the lens, the lens is a pattern lens. 
     
     
       9. The LED automobile lamp according to  claim 1 , wherein a cross-sectional shape of the light-reflecting surface is a circle or a rectangle, when the cross-sectional shape of the light-reflecting surface is the rectangle, an auxiliary light-shielding sheet is also arranged at an end of the light source pillar, and an end of the auxiliary light-shielding sheet has a light-shielding hem extending toward the light source plate.